Observations of live Tursiops truncatus from different datasets collected in France and the United Kingdom were compiled to generate Maxent presence-only habitat suitability models in the CHARM3 study area. The data span from 2002 - 2011 and come from both dedicated and opportunistic surveys from land, sea, or air.

Sightings records were contributed by: Marinelife and the Atlantic Research Coalition, the University of Exeter, the Sea Mammal Research Unit, the Cornwall Wildlife Trust and Seaquest Southwest Programme, Wildfowl and Wetlands Trust Consulting, Marine Conservation International and the International Federation for Animal Welfare, the Joint Nature Conservation Committee, the Centre de Recherche sur les Mammifères Marins, and the Iroise Parc Naturel Marins. Data were filtered to remove obvious

location errors (i.e. on land) and in poor seastates (>3 Beaufort Scale). The filtered dataset was then used to generate Maxent presence-only habitat suitability model rasters in 0.04 degree resolution.